UThing Issues

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The following is a list of issues with the current version of uThing that will need to be taken into consideration.

I²C pull up resistors

The uThing does not include I²C pull up resistors. Internally I²C might still work if enabling the built-in 20k resistor in the Atmel processor, but for longer wires it is absolutely essential to include an external pull up resistor of 4.7 - 10 kΩ.